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An inflatable toy starts with 1.05 moles of air and a volume of 5.17 liters. When fully inflated, the volume is 8.00 liters. If the pressure and temperature inside the toy donā€™t change, how many moles of air does the toy now contain? A. 2.05 mol B. 1.62 mol C. 1.55 mol D. 0.679 mol

Respuesta :

superman1987

Answer:

1.625 mol.

Explanation:

  • To calculate the no. of moles of a gas, we can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant.

T is the temperature of the gas in K.

  • If P and T is constant, and have two different values of (n and V):

nā‚‚Vā‚ = nā‚Vā‚‚

nā‚ = 1.05 mole, Vā‚ = 5.17 L.

nā‚‚ = ??? mole, Vā‚‚ = 8.0 L.

āˆ“ nā‚‚ = nā‚Vā‚‚/nā‚‚ = (1.05 mole)(8.0 L)/(5.17 L) = 1.625 mol.

lukehersch300

B) 1.62

The toy now contains 1.62 mol

#platofam

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